Home / 126,521.49-189,687.42-76,589.55

Finding the Fourth Proportional to 126,521.49, 189,687.42 and 76,589.55

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Solution

The fourth proportional to 126,521.49, 189,687.42 and 76,589.55 is: 114,826.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,521.49 : 189,687.42 = 76,589.55 : x
  2. Step 2: Convert to fraction form
    126,521.49/189,687.42 = 76,589.55/x
  3. Step 3: Cross multiply
    126,521.49x = 189,687.42 × 76,589.55
  4. Step 4: Simplify right side
    126,521.49x = 14,528,074,138.46
  5. Step 5: Solve for x
    x = 14,528,074,138.46/126,521.49
  6. Step 6: Final answer
    x = 114,826.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.